EUVD-2026-49550
Out-of-bounds Write (CWE-787)
GHSA-jhhw-w49f-ccpw
9.8
CVSS 3.1 · Vendor: apple
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Severity by source
Vendor (apple)
PRIMARY
9.8
CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (apple) · only source for this CVE.
CVSS VectorVendor: apple
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
4
Analysis Generated
Jul 28, 2026 - 15:37 vuln.today
Patch available
Jul 27, 2026 - 21:17 EUVD
CVE Published
Jul 27, 2026 - 20:13 cve.org
UNKNOWN (no severity yet)
CVE Published
Jul 27, 2026 - 20:13 cve.org
CRITICAL 9.8
DescriptionCVE.org
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
AnalysisAI
An out-of-bounds write vulnerability in macOS allows a malicious application to cause unexpected system termination. Apple addressed this in macOS Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. No active exploitation or public exploit is known, and EPSS indicates very low exploitation probability.
Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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